Years ago we were riding over Gunsight Pass in CB,CO in a gang. Early days of clipless, I actually had a set and some shoes gratis of some banner hanging at a pre-Olympic MTB event in Helen, GA but hadn't done more than try on the shoes and was sticking with my toe clips on flats. The art of mtb'ing with toe straps is another thing altogether.
Anyway we were climbing up the old mining road and one particular corner fairly high up had water coming down over it, not very deep but as it was snowmelt it was pretty cold. Only one member of the group had clipless aboard that day and it was definitely a topic of conversation during the ride up. But at that corner I was on the inside and clipless guy was outside of me and just like that he went down hard on his left side narrowly missing me and getting pretty wet. That alone kept me off clipless for at least 2 years but I finally adopted them and rode Eggbeaters for years and using Mallets on my townie.
I have, as my prior post pic suggests, adopted a more devil may care attitude about foot wear and mostly just wear what's on my feet at the time which in the summer are JC treads and in the winter a pair of these rubber clogs that have a very substantial and grippy sole, not at all like the soft Crocks that trended awhile ago.
Sometimes if it warrants it I'll wear my XtraTuf's but only by using flat pedals can this be facilitated. With e assist I find that it really doesn't matter as much, if at all, if you are able to clip in. Just have a compatible pedal surface to shoe sole meaning you should chose your pedals to best work with your favorite shoes perhaps.
But going back to the GP story the worst that can happen with clipless is you do an Arty Johnson. I for one don't like doing that as I have had the experience before a few times and as I age I feel like it is best to not do so again. In conclusion I think that especially if you haven't ridden a bike for awhile just enjoy riding the bike with clothing and footwear you are comfortable with. Instead while whiling along the way riding think about pedaling circles which is a real good way to increase your pedaling efficiency overall.