Because I've been putting off guitar lessons for this very reason. I fear I may lose some of my "touch" for piano if I do condition my fingers to play guitar. Am I nuts or is there actually a right or wrong way of doing it or whatever? Any suggestions would be helpful!!!
No. That is all about muscle memory. I play various instruments and it never once lost my touch for any of them. Callouses on your finger tips should not affect your ability to play the piano at all, and when you sit down to the piano your brain will automaticly switch to "piano mode". And the same will happen with the guitar or any other instrument you may wish to take up.