I once checked them out but upon some questions of mine the developer stated that Jamstix 1 was not all that suitable to latin fusion including use of odd meters , interjecting changes in meter etc. The plan was that Jamstix 2 was going to try to tackle some of that.
However, I can see ways of utilizing it anyhow , again with perhaps interop with BFD, generating parts etc.
I guess the group buy offer and the impulsive shopper in me where to much too resist