My amazon order just arrived
First thing I notice is that I can't hold it the same as my g303. Here are some initial impressions after ~15 mins of FFA DMing in csgo.
I am using more of a fingertip grip with the g pro than previous claw/finger hybrid grip with the g303, it's a less tense grip with the g pro if I could describe it one way (Hand is 20.5cm/11cm using that RJN measurement). I can grip and lift it fine dry or sweaty. The m1/m2 buttons feel the same to me, but the right button is a bit louder. The m1/m2 buttons are lighter to press than my g303 and louder in general, however in terms of feel I like it over the g303. But my g302 with d2f-01fs feels better than both. I use the side buttons to switch nades in csgo and they felt fine. My thumb almost touches the side buttons, so that was a close call it doesn't
There wasn't any sensor rattle as well.
It glides fine on my Hayate Otsu, but my g303 with the bottom sanded and with hyperglide mx-2's glides better (don't have g302/g303 with stock feet to compare). The g pro's cord is OK since it doesn't touch my mousepad as I use the mouse on the top 50% region of the mousepad. The cord is a bit better than the stock g303, but ceesa's paracord is a lot better than both. The mouse wheel scrolling is a lot better than the g303, however it is harder to press though but that doesn't bother me too much.
Overall this does take over my g303 since for me it is a less tense grip and my performance didn't suffer (flicks, kdr, etc. was about the same while DMing), better scroll wheel, better m1/m2 feel.
With the upcoming hyperglide feet and a paracord, this should be quite a beast of a mouse