I have them but little opportunity to use them, alas...sigh
Again, I got them when they were just released, and the hinges do seem fragile, but they should mostly last for many gaming sessions as they aren't that weak.
Putting magnetics on base would be ideal, I bought Dark Platypus' magnetic mat.
The magnetic mat is heavy, comapred to say a chessex mat, and can't roll up as tightly due to stiff material and I presume, the stuf used ot make it magnetic. So while it's sitll vertianly portable it' snot "heavy heavy" (think it weights 2lbs?) I'd preffer it for a "permanently laid out mat on a game table in the garage" sort of idea.
On the plus side magnetics are SO much better for using WOTC plastic minis, which are so light wieght they always get knocked all over.
So I have been gluing tiny magnets onto the bases of all my Medium/small WOTC minis
