Hey Whirly; Very similar to my own experience. When I did my PPL(H) few of the R22s we used even had instruments !
Subsequently did an hour or two on instruments and confirmed everything I'd expected and been told.
I now include some time on instruments every time I go for a bit of a refresher and of course on the annual checkrides (i.e. once every six months - R22 then R44).
As you say, sharpens up your general flying, and I reckon I could do a 180 without panic if I had to. But the main thing is to remind yourself what a good idea it is to keep away from those clouds !
Safe flying Whirly - give us a shout if you are ever up in Scotland <img src="cool.gif" border="0">