QUOTE(meerkat @ May 16 2006, 11:43 PM)

If you play with slightly long nails on your left hand and watch yourself play in a mirror, you'll notice straight away how it affects your technique. You have to start placing your fingers at an angle to move the nails out of the way so your pads can get down to the fingerboards.
If you substitute ' keyboard' for 'fingerboard', this applies to the piano too - pupils with longer nails flatten their fingers to accommodate them, and end up with a really poor hand position. One needs short nails on BOTH hands to play the piano comfortably and efficiently.
I suspect that this is why CE has posted this topic - as he plays both piano and guitar, he needs to keep both himself and his two teachers happy!