As I mentioned in a comment to my original post on testing the Arrow Antenna 2M Yagi, I was able to have a QSO on 2M FM simplex with a friend using this rig. Distance was about 22 - 25 miles. 5W on my end, while he was using 50W into a Kenwood 2M mobile with a home Yagi on his end. (He would've lowered power but forgot how and didn't have his rig's manual handy.) Here's a pic of his setup, with a very post-apocalyptic vibe going on.
We also tried it with a Baofeng HT connected to his tape measure Yagi, but all I could hear was static when he called me, even though he was able to hear my 5W transmissions clearly.
At some point I'd like to try 2M SSB, which should punch through better than FM, but don't currently know anyone else relatively nearby with a 2M SSB capable rig.