Buffer Renekton's spells

Quick note: I'm not a Renekton main

Played a game with Renekton, and for the few times I play him, I feel like it's awkward to have all skills blocked when using another skill. For instance, when I use E, I'd like to buffer W, but when my E ends, my next auto attack won't stun the opponent. This results in me mashing buttons unnecessarily while not being sure if the skills will activate. I know this is probably not an issue with Renekton mains, but for people who want to get into Renek, I think it can just be a quality of life improvement.

Have a good day sirs