I have one. It's sloppy and flops around. But it's OK when you shoot off of it if you lean into it.
I also have a standard Harris, and a swivel/slot Harris and it's my preference. I also have a Harris knock off and it's pretty close in quality to the Harris.
Any new bipod I get will most likely be a swivlel/slot Harris. I like Podlocks but tend to use the knock offs ($30 vs $3 makes it a no brainer).