I agree, a Luscombe is no more "twitchy" than any other taildragger.
Contrary to popular belief, it is actually a good training aircraft for tailwheel experience as it handles like the typical classic taildragger that it is. It is not especially difficult to fly and has no more vices than any other taildragger of a similar vintage; it also has the good training characteristic that it will happily show you up if you do not fly it well. With the right skills, a Luscombe is a delight to fly.
However, like most tailwheel trainers, you need an instructor who knows his taildragger.
JD