Saw the price at Wiggle independently of STW and bought one a little while ago. Bought a large orange one, normally a medium but bought a size up.
Fit is quite good, relatively slim cut but not massively so. Arms are long enough for me at 6’2 if I’m not too leant over, but a full arms out stretch will have the arms riding up.
Doesn’t pack up as small as a montane featherlite shirt and would also like more reflective stuff on it. Has some softer more stretch fabric which will probably help breathability but not so good for water resistance. Not used it in anger yet