Has anyone ever used Kilz High Build primer?

The house is finished except for the bathroom where we ran out of primer.  I did some quick research and found Kilz High Build primer.  Expensive, but I wish I had found it prior to painting the whole house!  There are a lot of imperfections on these walls and we used a regular primer and a very flat sherwin williams paint.  Its ok, but nothing fancy by any means.  I think i'm going to reprime/paint the next turn around.

Just curious if anyone has used this before.  The reviews are great.

thanks!