Does that mean Jim "The Big Red Shoe" is the only one that can offer up an opinion? He is the only person here with 2 not 1 Schluter Workshops completed.
What about Dana? Can he help - he is Jim's boss on John Bridge's tile forum and pretends to be a builder. Dana still has not shown us his work portfolio or offered up his company name fro reference.
If you consider Jim a Kerdi Salesman (like I do) then really only me and Roberto are allowed to help on the tile end.