I like the idea and might set that up but my residential ISP doesn't have great peering and latency isn't great. I wonder if that extra roundtrip would be noticable or not.
I do this from my phone with crummy copper ADSL at home that gets <20Mbps in the uplink and don't notice the difference between it being on and being off. YMMV of course, and all I'm doing is basic web browsing, occasional youtube videos and chat apps but it's fine for that.