Yeah, a spool is predictable...
My feeling for IFS is that a locker is needed for rock crawling to prevent blowing up CV axles but the other compromises didn't fit our use. But we haven't done much harder stuff since 2008 on the Rubicon, that trip got any remaining need to seek-and-destroy with the truck out of our system.
'91 Pickup - Imelda
'08 Tacoma TRD - Donna
'09 Kawasaki KLR650
'12 Gunnar Rockhound 29
"Our task must be to free ourselves from this prison by widening our circle of compassion to embrace all living creatures and the whole of nature in its beauty. Nobody is able to achieve this completely, but the striving for such achievement is in itself a part of the liberation and a foundation for inner security. " --Albert Einstein