Finally received the RS Taichi suit last Thursday and, man, what a nice piece of kit! Leather is thick yet soft and workmanship is absolutely top-notch throughout. Tried the suit on briefly that evening and couldn't ask for a better fit out of the box. Though a bit of a struggle to get into, the suit is properly snug yet not overly constraining. The legs and arms tucked easily into my boots and gloves and didn't present any excess bulk. I don't have a chest protector yet, but trying the suit on with a Forcefield L2K Pro back protector convinced me that the size 54/44 was the right choice: I'll have just enough (breathing) room left when the CP is added. Legs, lower torso and shoulders fit snugly, too, though beefier arms would help fill out the sleeves a bit more. (More arm curls?) Anyway, the real test came on Saturday and Sunday when I took the bike out for a couple of long rides. Wow! Where standing up in the suit is difficult, riding in it is another story - honestly, it really disappears. With all the perforation and resulting air flow, you truly don't feel like you're wearing anything. Moving around on the bike is effortless and, again, you just don't notice the suit - it doesn't impede any movement on the bike. Hope I never have to comment on its crash-ability, but it sure looks and feels like it can take a beating.
If you get the idea that I'm absolutely pleased with this suit ... you're right! Highly recommended.