I have been using the Store hair and clothing in a couple of different installation setups; up to Seasons only, and up to Bon Voyage only, without any trouble with the package files in a subfolder of my Downloads folder. My main computer that I play Sims 2 on does not have the EADM software on it, either. Therefore, I have not found the above quote to be correct.

*Thanks to everyone here for their generous sharing.

O.k. The Bon Voyage jewelry stand has the three color (texture) options you mentioned here, Paradoxe. The FreeTime and Apartment Life EP jewelry stands do not, though. They only come in the mountain one. Therefore, this Sims 2 Store jewelry stand may only add the missing three color options to games that do not have Bon Voyage installed, but do have FT &/or AL. That's what EA/Maxis left out of the Store object's description, though.  They do not specify, at all, what the stand does. Due to that, it appears as though it may do more, like add the jewelry feature to games that do not have BV, FT, or AL installed.

Second item:

http://thesims2store.ea.com/productList.html?scategoryId=10512&categoryId=10473

Well, I reinstalled FreeTime to test the jewelry rack and can confirm that it's only apparent function is to add the missing three color options to the existing EP's jewelry rack. Turned out that the OBJD didn't even need modifying for it to do that. I'm still not sure if it should have more functionality, though. 

Motoki, thank you very much for updating this computer!