I've had both the jacket and pants for the Kuiu Guide series, but only have experience with the Catalyst pants.
IMO, both pants provide about the same level of warmth and wind-resistance as well as DWR capabilities. The suspenders setup as an option on the Catalyst is nice.
I think for stand hunting, both pants are pretty equal. I like the cargo pocket setup on the Catalyst. I think the guide pants slightly edge out the Catalyst for me as the ability to open the vents on the Guide pants is very handy for helping with temperature control, but not necessarily a feature you'd use often if you only hunt from a stand.
Just to comment on the guide jacket- the pocket setup is handy as they can also add some light venting, and there are large armpit vents as well. The DWR works very well. I actually picked up a DCS Guide jacket in a solid as I think it's a great daily softshell jacket. Sizing tends to run a little small though, as I needed an XL size just to be able to have some room for layering underneath. It fits like a true LG for me.
I actually use a Teton softshell for early season hunting as it has a good DWR coating and wind-resistance without being heavy or too warm- just there's no venting whatsoever.
hope that helps you in some way.