Which shoes?

[mr brightside]

I’m now thinking I need something that has grip but enough cushioning for the harder parts of any routes.

If you use a forefoot strike, any lack of cushioning will become irrelevant. Your problem was once one i had until i decided to improve my running style, and now it doesn't matter. My road running shoes for going out with socials etc. are worn out X-Talons, which have very little shock absorbancy, but it matters not because my calves do the work instead.

One piece of advice i will offer up is to always prepare for the worst. Don't risk slipping around because it can get you badly injured. I use Walsh/Mudclaw for anything grassy and X-Talon for reservoir paths etc.