The string s will affect your playing and do need to have the 'get used to' time. .11's are some pretty heavy strings. I don't know many players that use that guage. It will slow you down because your fingers and how much strength you used to put in to things like bends and hammer not require more strength.

It's like lifting weights, if you go up to a another level, you wouldn't expect that you do it as well as that lower weight you mastered. You are still working with muscles, strength and how much it takes to do what you used to do with a different weight (string gauge).

As to whether you keep on the string gauge, that's up to you. It's about comfort in your paying too. Strings are important to tone but your fingers are more important than that in creating tone.