I've found that having an IDEX machine doesn't necessarily make a lot of difference to me unless I need to do two colour prints or print supports with a different filament.

I'm mainly using the left extruder for printing and usually only load the right extruder up to print supports or for duplicate printing, so at the moment for about 99% of the time only one extruder is in use, however the IDEX set up is there if I need it or if I only have enough of a different filament for a one off small print and saves swapping filament out.