I really like the idea of a sabbatical... but I always worried then in my (our) field you'd end up really really far behind / out of touch if you took a 2 month sabbatical.
My impression is that you're overstating the effects of a 2 month sabbatical.
Much like turning off the TV, I suspect that if you do get a 2 month sabbatical, you'll find out that most of the new developments are overstated and that you'll be able to quickly catch up.
