The clones work fine with TIS2web as far as I know, provided you don't update them. I have no idea how, but somehow, updating a clone can/will fry it. It doesn't do anything to the card, it actually kills something in the tech2. A friend of mine worked at a shop that acquired a clone, and when the updated it, it got fired. They got it replsced, then tried to update the replacement and it got fried too. Took the card out of the fried tech2 and put it in mine (genuine) and it worked fine.
To each their own, but personally, I would avoid the clones like the plague. I bought my CANDi module through a local dealership to make sure I wouldn't get a clone.