Quantification:

For all comparisons we'll assume a probably low estimate of 100 dmg average / hit for simplicity.

At Capped Haste

Scenario 1 - Top Of The Line at Haste Cap + Mythic AM3
No additional DW gear
QA 4
DA 31
TA 8
Store TP + 41


Terpsichore 99 | Twashtar 99
Delay 205 | Delay 176
(133.5 base delay with DWIV)
Base TP /hit: 4.6
TP / Hit with STP: 6.5
Attacks per Round: 3.58
TP per round: ~23.3
Floored Delay: 76.2
Approx. time per round: ~1.27s

Time to use Presto + Box step + Reverse Flourish
4-6 seconds non-melee time
10 TP cost
77 TP return
Gain: 67 TP

3.14 - 4.72 rounds lost
73 - 109.3 TP lost

Net Gain: -43 to -5
-1124 to 1689 damage lost

======================================

Twashtar 99 | Pugiunclus
Delay 176 | Delay 150
(114.1 base delay with DWIV)
Base TP /hit: 4.45
TP / Hit with STP: 6.27
Attacks per Round: 3.31
TP per round: 20.7
Floored Delay: 65.2
Approx. time per round: ~1.09s

Time to use Presto + Box step + Reverse Flourish
4-6 seconds non-melee time
10 TP cost
57 TP return
Gain: 47 TP

3.67 - 5.5 rounds lost
75 - 114 TP lost

Net Gain: -67 to -28 TP
1214 to 1820 damage lost


Time to use Presto + Box step + Box Step + Reverse Flourish
6-8 seconds non-melee time
20 TP cost
100 TP return
Gain: 80TP

55 to 7.34 rounds lost
114 - 152 TP lost

Net Gain: -34 to -72 TP
1820 to 2429 damage lost

=========================================

Terpsichore 99 | Twashtar 99
Delay 205 | Delay 176
NOT HASTE CAPPED
DW+23 STP+46
Haste (150/1024) + Samba(101/1024) + 23% gear (233/1024)


QA: 0 TA: 3 DA: 28
Post DW Delay: 89.5 (hit)
Base TP: 4.24
Post STP TP: 6.2
Attacks per round: 3.31
TP/round: 20.5

Post-haste delay: 94.4
Time/Round: 1.57s

Time to use Presto + Box step + Reverse Flourish
4-6 seconds non-melee time
10 TP cost
77 TP return
Gain: 67 TP

2.55 to 3.82 rounds lost
52.23 - 78 TP lost
844 to 1264 damage lost

Net gain: -11 to +15
+2 average

=================================

Twashtar 9X | Thokcha 99
STP+31

This last one assumes a worst case where you have to sub NIN or something else silly!

QA: 0 TA: 3 DA: 31
Post DW Delay: 86.01 (hit)
Base TP: 4.21
Post STP TP: 5.52
Attacks per round: 2.83
TP/round: 15.62
Haste (150/1024) + Samba(101/1024) + 23% gear (233/1024)

Post Haste Delay: 90.7
Time per round: ~1.51 s

Time to use Presto + Box step + Reverse Flourish
4-6 seconds non-melee time
10 TP cost
57 TP return
Gain: 47 TP

4-6 melee econds lost
2.65 to 3.97 rounds lost
41.4 to 62 tp lost
Net gain: -15 to +5.6
749 to 1123 damage lost


Time to use Presto + Box step + Box Step + Reverse Flourish
6-8 seconds non-melee time
20 TP cost
100 TP return
Gain: 80 TP

3.97 to 5.29 rounds lost
62 to 82.63 tp lost
-2.63 to +18 TP gained
1123 to 1497 damage lost

=============

And the worst case without saber dance

QA: 0 TA: 3 DA: 11
Post DW Delay: 86.01 (hit)
Base TP: 4.21
Post STP TP: 5.52
Attacks per round: 2.45
TP/round: 13.52
Haste (150/1024) + Samba(101/1024) + 23% gear (233/1024)

Post Haste Delay: 90.7
Time per round: ~1.51 s

Time to use Presto + Box step + Reverse Flourish
4-6 seconds non-melee time
10 TP cost
57 TP return
Gain: 47 TP

4-6 melee econds lost
2.65 to 3.97 rounds lost
35.8 to 53.6 tp lost
Net gain: -6.6 to +11.2
Damage lost 649 to 972
Damage Equivalence of net TP assuming no overflow: -132 to +220




Time to use Presto + Box step + Box Step + Reverse Flourish
6-8 seconds non-melee time
20 TP cost
100 TP return
Gain: 80 TP

3.97 to 5.29 rounds lost
53.67 to 71.63 tp lost
+8 to +27 TP gained
972 to 1296 damage lost
Damage equivalence of net TP assuming no overflow: +160 to +540


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Even in the worst case (non SAM subjob, only self-applicable buffs, no saber dance), the benefit of using Reverse Flourish (without No Foot Rise) for raw TP gain is marginal at best because of the forced delay invovled and is only really worth using for a solo skillchain where the additional skillchain damage will overcome the damage loss due to delay.

The only exception perhaps would be if your situation warrants constantly using waltzes and these situations are some combination of a.) extrmely rare or b.) situations where DNC is filling a role it's not designed to fill.