I run the older original SE w/o gps. Did not like the gps features at all. Now that garmin bought them I’m sure it’s better. I continued to run a separate garmin gps 64st, which I can use with gloves on. I do carry my phone, but it’s for pics or texting if in cell range. I’ve dabbled with the phone as gps, but I find finicky, no confidence in battery especially when cold. Yes, bring portable power but adds weight. The onyx phone graphics are impressive tho.
The 64st is my main tool and I like it and am comfortable with it. The SE is for emergency and texting home. Phone is camera. It’s a few ounces more, maybe, and a little old school but I have hi confidence with it all.