Switching your feet to cut of the ring more effectively.

[beenKOed]

The majority of fighters don't switch, that should settle the question.
I will say that it's fun to see a fighter who does it well, and I have often thought that switching for a few seconds might help confuse an opponent, but again most boxers don't switch.
You see a lot of switching in MMA and it's not always done to protect the lead leg from kicks.
Standup or boxing in MMA is pretty crude and wide open compared to the more formalized professional boxing, so they can get away with it more often, but it usually leads to trouble for the switcher in the long run.

[Jimanuel Boogustus]

Sorry my post was the worse post ever... I didn't even finish what I was trying to say - the actual point I was about to make. Sorry.

You'll see a big fat ***Edit*** across my OP now in respect of the actually point I was trying to make, as an example of where I think switching stances may be beneficial.

Great posts though guys. Really really appreciate the practical and insightful advice.

I guess it's something that would need to be trained into a fighter from scratch. Kid Galahad switches very effortlessly, so much so that half the time you don't even know he's done it.