Picked up one of these and thought I'd share my thoughts.
It's not one of the best CHMS figures and here's why (based on the figure I have):
The arms swing loose off the shoulder piece, so it tends to do this:
Either the wrist or shoulder joint is on backwards, so either the arm tab or wrist tab is visible (this is more a personal bugbear of mine):
I found the wheel-shoulder connections and especially the feet hard to move into position.
There is one spot of bad paint application:
The face is missing some of the details i.e jaw line so it looks he is pouting (to be fair this does give him some character):
The car roof is wobbly and the upper torso in robot mode does not feel as solid as Sideswipe/Red Alert/Sunstreaker
The engine is a very tight fit. The gun won't fit as an exhaust pipe, won't sit in his left hand and has to be jammed into his right.
The hands are a bit loose but not too badly.
So there's nothing irreperably wrong with him, just a lot of relatively minor things, some of which I can probably fix, which add up to a slightly less than enjoyable figure. I don't regret picking it up but it does pale next to the CHMS Seeker figures I have got. It's certainly not the worst (stand up KO Starscream with no elbows and two left hands!)