2.5 layer goretex for alpine

Ive always taken a triple layer hardshell (MH spinoza) with me on longer climbs in the mountains. I love the jacket and will continue to use, especially in winter.

I would like to have a bit lighter of a hardshell for summer alpine climbs where it wont be getting nearly as cold.for reference, the climbs ill potentially use it on are climbs in CO above 10k ft, 5+ pitches, overnight before and/or after climb.

I recently purchased the arc beta sl because i found a good deal on the jacket and thought it might fit the bill. That being said, its only 2.5 layer and i have no experience with that. does anyone have any positive or negative experience with this jacket or others similar? The other difference in this jacket compared to my usual is it doesnt have pit zips. ive always liked having pit zips, especially in continuously light rain that doesnt end your climb but will get you very wet without a waterproof jacket on.

ive read some reviews from a few years ago that it leaked but im hoping thats no longer the case, as i have a lot of faith in arc teryx and their products.

also, if the recommendations are that this jacket isnt a good option, im not currently looking to buy another and will just go back to my spinoza.

thanks

I use an OR Helium on climbs where the forecast isn't calling for rain, as a just-in-case piece. Usually it doesn't come out of the bag, so it's worth the tradeoff of some durability and breathability for weight.

2.5 layers is less durable than 3 layer. It's usually cheaper, more supple and lighter. That's about it.

They tend to not transfer moisture aa fast/in as much volume as a 3l. I have one that I use as Kyle does. The nice thing is that it's light/Small enough that I can clip on the harness if I'm feeling lucky on a multi pitch