For sure you can expect some reduction in battery life on the Touch, if it operates in browser mode. Gotta power that little radio
I don't understand the hype over a purported 2 month battery life. True my Nookcolor requires charging every other day. So I have the charger on my night stand, and plug the NC in just before I turn out the light to sleep. No hassle. Where are you going to be two months from now when the Touch battery runs out? Most likely you'll have lost the charger by then.