Yes I have 2 and the apples are great and the trees bore fruit early. They get a little waxy after a short time after picking and I ha e used them in my cider blends. Mine are from Boyer Nursery in PA. Great nursery that supplies a lot of county conservation districts seedling sales which will be starting soon. Where in PA are you?
How is Winter Bannana as as far as disease resistance goes? My county extension web sight says to check for 2017 tree list in January, I checked it again but still nothing.
I got Winter Banana as well, just grafted last year, I mostly have it because its the only apple i could find that originated in Michigan. We have tons of wild crabapples around but not many reach the 'apple' size.