It's not like they peddle themselves but for sure it makes ascending much easier depending on the amount of assistance you have and what mode your in. In general I find I tend to go further and longer when on the e-bike v's the manual and it is very capable on downhill as well. Do tend to attract a lot of negative comments from die hard MTB'rs but then again everyone derided full suspension when it came out. I guess people just don't like change.
What did you go for looking at a Trek P7 at the mo.
Update, I should have read above. Mine will be both for a commute and hill riding down south. So looking at a hardtail