Couldn't resist and hit against the wall and a few serves. The Lux Adrenaline naturally felt a bit stiff, haven't used a full mono-poly in a while (I didn't realize it was a mono poly when I clicked order or I would not have chosen it since the whole reason I'm looking for a new frame is comfort!), but I assume it will break in a bit, it seems to get good reviews and this is a very comfy frame so I'll give it a chance.
The 4 3/8 was not as small as my other Prince 4 3/8s so two overgrips felt too bulky and I went down to one, leaving it at 326g and even balance. I'll have to see how that works. My previous frames are 340g and very HL so plenty of room to make it more HL I suppose, but I will try it like this before tinkering.
I can never tell much by hitting against a wall, in this case a very small one, but while I didn't notice the same forgiving huge sweetspot (stiff new poly?), it did seem to have that same control I felt, where it seemed like the ball would just never go beyond where I tell it. When I hit with the O3 the other night I had that "I can keep the ball in the court no matter what" feeling and this felt the same.
Hit a few serves, very easy, flat or kick, lots of ball movement, I think serving while be no problem with it. Playtest tomorrow morning. I just hope the poly mellows out before my body protests!