I know I tested this before, but just to confirm I tried Nether Blast which does fixed damage with no regard to Pet TP and is scarcely if ever resisted. The damage calculation variability is almost solely based on Pet MAB gear stats and base pet stats (and Foe MDB.) Basically I chose Nether Blast for its ability to quickly render consistent results.

Commands issued from the menu in Timer gear, then in Perpetuation (idle) gear yielded the same result versus Belaboring Wasp of 3724 damage (Performed twice in both sets to confirm) then twice in my pet MAB set as it is today, both yielded 6181 damage
Then tried from my macros with the wait timers as they are with .5 6181 damage, and finally with the second timer at 2 for 6181 damage. (also all were done with Style lock off then on in case any latency or lag was generated due to animations or gear swap blinking)

I know these work for me as is, and I wont make any claims that they work for anyone else. That said I would encourage you take the numbers in the syntax and play with them to find what works for you. It was not my intention to hand out stone tablets.

What it does demonstrate though is that .5 is usable, which is not known by most, and in my experience is stupid useful for job ability stacking. It works for the timer gear because timer gear functions identically to fast cast gear with respect to when you have to have it on. There was a time a while back when Summoners had their pet abilities fire off from 3 seconds then SE brought that down to instantaneous, and SE had to change it back to at least a second because it rendered timer gear useless if the community wanted to out put a good spike in damage. in my example I am probably utilizing very low internet latency, this works for me because it can. If you have a higher latency then obviously you will have to make changes.

The other thing I was trying to demonstrate is the ability now to easily render timer information for longer cool downs so one can avoid wasting focus time on pouring through the menus to find out when Apogee is up again (for example). A BST for example could use /echo <recast="Call Beast"><recast="Bestial Loyalty"> in a pet PDT gear swap macro, so you know which way to go in case your pet is killed.

I hate to give out erroneous information, and you both have helped me see areas that need clarification, so I do appreciate the input.