Interesting that you're also doing the single contact lense thing - which I've been doing with great success for the past 3- 4 years.
I have varifocal glasses now (for normal life), and I've found that in an urban, with dry weather, there's nothing better than them. But in a drizzly, maybe dank/damp, deep forest, I'd stick to one contact lense.....
Good luck! Even my situation is getting worse with age.....