>>2825336I mostly use a 5D2 with PW TT5/Mini TT1/AC3 and 600EXs; have sipped the Fuji Koolaid back to the X Pro 1 and X100s. Have had some success using the PWs on X cameras, but you end up - until the XP2 came out - with a sync speed of 1/100 with the slower Fuji sync speeds and radio triggers. BUT- the Canon-spec TT1 has a conflict with the X Pro 2. Ended up using a couple of shitty Yongnuo 580EX knockoffs with the XT-1's clip on flash as an optical trigger until I recently found the YN knockoff of the Canon wireless transmitter-now I'm using that to trigger my 600EXs and I'm fairy stunned how reliable it's been. So I have reliable remote triggering and output control without a Pocketwizard. Finally, I'm now starting to think I'll ditch my remaining Canon bodies/lenses.
On the Nikon side, there's a company called... Robo, I think, that has Fuji triggers that will support Nikon TTL. Might be worth looking into.
I've predominately shot Canon but have quite a bit of time using D800s and 810s, D1s, D2s and D3s, and I've always felt a bit left behind in the flash world shooting Canon. I would say if you're considering the jump to Fuji, don't half arse it- get an X Pro 2 or wait for an XT-2, because if you're used to 1/250 sync, being stuck at 1/180 might really piss you off.