I, at 165lbs, had way too many problems with the Reynolds wheels and finally sold them. I asked Lee from Lew if this problem would be similar on their rims (non-integrated set-up) he could not tell me that I would not have similar problems- he then recommended the integrated (5k) wheels. Great idea but sorry, a bit too much.
So when the main marketing guy is uncertain, well then I run the other way. Your results may vary.......
What type of problems did you have with your Reynolds wheels? I agree that a 16f/20r is not the best spoke count for most people but it does work surprisingly well.
The hub and lacing choice on Robs wheels will also make them a bit stiffer then a comparably laced Reynolds wheel. The front mig45 has a wider bracing angle than either a Dt or White Industries hub laced radial with the heads outside the flange. The rear wheel is laced 2x on the non drive side and 1x on the drive side. What that does is increase the bracing angle on the drive side by a couple mm's without reducing the angle on the non drive which gives it a surprising increase in lateral stiffness. Jeremy at Alchemy wheelworks has done some testing with identical wheels one 20h laced 1x drive and 2x non drive and then a 24h laced 2x both side and the 20h actually tested stiffer.
I agree that these are not the strongest most durable Powertap wheels made but considering Robs size and the stiffer lacing pattern I don't think he will have problems of needing constant truing.
As far as Lee trying to steer you toward the integrated wheel it is good that he didn't try to steer you toward something he didn't know about. Lee's background is in computers and not wheelbuilding. So he could have lied to you like most marketing guys do and told you that it would be fine to get a sale out you but he gave you the truth in that he didn't know how they would be for you.