Summon Duration?

What about the farm stuff? The ones from yeti monsters, supposedly increase summon duration if I'm reading it right.

I considered Monster Life buffs as a way to augment my %summon duration, but it's too high-maintenance for me. =/

But as others have suggested above, the field & orb durations seem to be separate and %summon duration seems to only affect the field. So getting more of it will do nothing for me. =/

Probably just going to cope with the server lag by switching every other green & purple field, though I had wished to stay at purple the entire time.

Side-note: To this day I still haven't figured out which color is superior against a single target.