After wearing these Rangers Rx with bifocals for 5 mins, there is no way I would spend a day with them on in the woods. They will work fine for the range, but the distortion is too much to deal with in heavy cover. The bifocal was a FT 28, which ended being bigger than I expected.

I have readers in a pair of nonRx sunglasses that I use all the time with contacts
and I barely notice them except when I need them. Bifocals on top of a Rx lens is a very different creature!

Such a long, long time to be gone, and a short time to be there.