With the integrated RT flash solution I'll be able to keep my kit down to a single Pelican 1510 case http://www.pelican.com/cases_detail.php?Case=1510 and a small photo backpack.
Basically a few lenses, flashes, tripod head and pano bar, compact Manfrotto stands and light modifiers. OK I cheat and the tripod is extra.
I'm working my way down to one lens, and a total bare minimum of equipment. I'm working on a way to use the flashes without stands or umbrellas.
Love to hear about the standless flashes - I find I use 3 for portraits - one each side, one overhead. Using the supersize umbrellas do give wonderfull soft light that wraps around amazingly well