Re: Experience
I've had a two-piece Roadcrafter for about four years now and I love it. I have the regular hard-shell pads in shoulders, elbows, and knees, plus the optional back and hip pads.
I've had two low-speed incidents in it (once catching a rut in dirt at about 25mph; once lowsiding on rainy oily pavement at about 15mph). Both times my body was totally protected and I had to look hard for scuffs on the suit. The armor did its job well too. The cheaper suits often have much crappier, simple closed-cell foam armor.
Re comfort, I added the optional "ellipse" insert which allows more forward lean -- essential for sportbike riders. In general I think you have better mobility in a 'stich than in most leathers. (See the picture of me on the cover of the new catalog push-starting my old Nighthawk S
A 'stich doesn't offer as much abrasion protection as leathers. However, if you are more likely to wear the suit than your leathers, then you have a net increase in safety.
The suit also isn't particularly great in hot weather. It does have pit zips and a back vent (for better convection), but above 85 or 90 degrees it gets kind of toasty in there. I think perforated leathers may be more comfortable in the heat.
Overall, though, I think the Roadcrafter is the best suit you can buy. The only thing I would change if I were doing it over again is to get a one-piece, for the sake of convenience and reduced bulk.