I have noticed, on those occasions where I've found a product works in Poser, doesn't work properly in D|S, could be fixed to work in both very simply, and I've contacted the vendor to say so (always very politely), that vendors appear to fall into two very distinct camps.

One group comprises vendors who are very reasonable, express gratitude for the help, fix the product speedily, and quite often ask follow-up questions when they find they're communicating with someone who's reasonably technically savvy about both D|S and Poser.

The other group are dismissive, frequently rude, won't listen to anything and won't even perform an update on their product that would take two minutes to do to give comatability to both - often then leaving me with having to write a lengthy description of how to edit one line in a cr2 or somesuch for D|S users who've bought or want to buy the product but have never opened a cr2 in a text editor in their lives and are afraid to do so.

It's particularly galling when, as has often been the case, the problem in D|S is only because something in the cr2 is actually wrong in terms of Poser standards, but Poser's very lax parser allows the mistake, while D|S's parser for Poser files, which is much stricter, doesn't. And the vendor will swear balck is white, rather than accept that they hadn't quite understood the Poser standard fully, and make their products comply to the Poser standards, when that's actually all that's needed for them to work in D|S too.