has any one shot or know anyone that has used it. and do u like it or not?

I have a Hevi Shot choke for turkey hunting and love it so got the waterfowl system this year for my Xtrema 2.  I just did some patterning with it past weekend at Hevi Metal patterned well at 35 yds (3" #2's).  Carlson makes the chokes and for the price of one Patternmaster I got the mid range and extended range set from Hevi Shot.  Shot a Kicks last year (modified) and wasn't that impressed with it shooting Hevi Metal so went back to my factory chokes.  After doing some patterning, confirmed my factory chokes patterned better than the Kicks did for my waterfowl needs.  I'll be back out this weekend doing some longer patterning to confirm my 50-60 yd patterns from previous shots using my extended range.  The Hevi Metal 3" BB's and #2's seemed to pattern well for me as well, as did some Hevi Duck.  Lets hope the weather gets cooler so I can get it all in....I'd recommend the tubes but you'll still have to pattern test with your preferred shot load.  Good luck.