I've used 1234 classical guitar fretting since shortly after I started playing. It made things a little awkward, but the real problem started when I was getting pains in my left wrist a few months ago. Playing lighter helped, but that conflicted with the inner sound I wanted. But now, I've seen the 124 fingering light. Standing up is no longer an obstacle to me, in fact, standing up with 124 is even more comfortable than sitting down with 1234. Ah... so comfortable! And even my muting has improved since I find my hands naturally sprawl across the strings as I play.
So, the realization I had is that no matter how widely accepted the "correct" technique, it's not a skeleton key that will apply to everyone. Actually, it's merely a springboard to help you find your own technique that fits the way your brain wants to play. Considering how different we all play (scale choice, aggressiveness, ect.) there's simply no such thing as one technique that fits all. So do what's comfortable!
So, the realization I had is that no matter how widely accepted the "correct" technique, it's not a skeleton key that will apply to everyone. Actually, it's merely a springboard to help you find your own technique that fits the way your brain wants to play. Considering how different we all play (scale choice, aggressiveness, ect.) there's simply no such thing as one technique that fits all. So do what's comfortable!