I'm a big fan of resonant antennas, especially at QRP. I know the random wire and tuner is quick to deploy, just not as efficient as a tuned dipole or EFHW.
It will make you plenty of contacts, but consider adding additional antennas to your QRP arsenal.
"But I work everything I hear with my crappy antenna !".......True, but it's the stations you don't hear with your crappy antenna you miss out on.
I once worked a station using a leaky dummy load. So.....I worked everything I heard ! Would you use a dummy load for an antenna?
Bob, I could not agree with you more.
From day one I was always a firm believer in using a matched resonant antenna. I want to maximize my ERP and feed my RF in phase with the antenna, not out of phase.
I operate portable QRP all summer long and I would not dream of using anything less.
Barry, KU3X/QRP