Before we go any further, I know that the first thing that comes to your mind when you hear high Skill Speed is obviously TP issues. I did sufficient testing and found that with Ninja's Goad (or MCH TP tower) and correct usage of my Invigorate I could DPS non-stop for around 5:30 minutes without running into TP issues with a 1000 Skill Speed build on a dummy. I could definitely push it a bit further if I didn't say to Ninja to stop giving me Goad given that you will almost never encounter a fight of more than 5:30 minutes non-stop DPS without downtime due to execution of mechanics. I have been experimenting with a high skill speed build (both high SkS and Crit to be precise) for a few weeks (between 930 and 1050 SkS and 1050-1300 CRIT) in an effort to see how it fares compared to the current BiS which revolves around Crit/Det. I will not report any precise numbers yet because, as I said, it is an on-going experiment but so far I have seen some great results DPS-wise.