Interesting to read about everyone's different experiences and preferences...count me in with those who like their bar end shifters. For me they were easy to use right away and there never was a problem getting used to them. Downtube shifters, on the other hand...no thanks! I had a vintage bike for a bit that had them and never did feel completely comfortable reaching down to shift. That bike was also a little big, which probably didn't help. Hope the OP is enjoying the new bike!
2011 Surly LHT
1995 Trek 830