[Leica] M3 question

[Ruralmopics@aol.com]

These are purely academic questions at this point but I'm curious . . . 

The M2 works well with the rapid-load spool because it has a manual-reset 
frame counter, right? But what about the M3? Don't you have to remove the 
spool to reset the frame counter? Doesn't that sort of defeat the purpose of 
the rapid-load spool? Also, I've never used the accessory rapid-load kit but 
my understanding is that it's not nearly as elegent as M4-and-beyond loading. 
Is it possible to have an M4-type claw spool installed in an M2 or M3? What 
does this cost approxiamately and again, how does the frame counter in the M3 
function then?

Inquiring minds want to know. The high magnifacation finder of the M3 is 
appealing (as a later purchase) but less so if it means stone-age film 
loading.