I don't know how long he has been in business, but I see nothing at all real on his site.
Definitely a name I remember from the 90s, but it seems like a lot of those old school dealers just aren't very good anymore, if they ever actually were at all.
Nothing real as Pete and Rich said
I find that if you crumble it up into a ball repeatedly, it starts to soften enough, so that you can wipe with it.
I share your concerns about Strickler Autographs. They are pretty good at marketing and still seem to do a lot of business, though. Once a collector builds confidence in a dealer, they often don't realize there may be problems unless they try to sell.