I don't know; I guess I assumed that if they get LB, they could get EB
We never had EB until this home, that i can recall. Maybe it's nothing, then - that would be nice!
I saw two or three Colorado Potato Beetles last year, on the squash - may have been the same one? - so I know they're here. We have tons of squash bugs and do the same as you, but haven't used Spinosad or anything on them. No matter how many eggs I squish, they always eventually win but that's okay. So far we've harvested more than we can eat ourselves, regardless.
I have thought of applying some sulfur, especially in with these potatoes, but so far everything seems to be doing well (this is only the third full season here), and I want to wait and see what does what with what's already here...if that makes sense, lol.