I made a bivy out of it. There's a ton of threads here relating to that.
Joining it to a visqueen plastic sheet with electrical tape has worked fine in my field use. E-tape is pretty waterproof. In fact, almost every kind of tape was un-removable, watch out.
The one thing I worry about is overheating (black tape) and loosening the glue, but OK so far and I don't leave it sit out. It does add a tad bit o weight, but you can trim off some material to make up for it. Also, the glue has affected my goretex pants where I put it over a small hole, so it is not archival and may trash stuff eventually.
I use the bivy for summer packing in case the weather report is wrong, makes a beefy ground sheet in any case. Still get some condensation, but I left it pretty square so there are cold corners. I figured I could always trim them off later. In the snow, I use a pad underneath and one inside, still experimenting.
So far I have left the hood on for a vent or emergency poncho use, but took off the cord-locks.