Emu XL-7 & MP-7 User's Group

I've been considering what to do, if anything, with my remaining ROM 
slot and noticed that the Sounds of the ZR ROM includes twenty or 
thirty Transwaves. I don't have much interest in the other samples on 
the ROM, but I do really like wavetable/wavesequence-based synthesis 
and was wondering how useful these were.

Has anyone with the ZR ROM played with the Transwaves?

Are the waves themselves useful? Do they sound good or are they just 
pale imitations of PWM, etc.? (Because if so, I can get the real 
thing from another synth).

I'm assuming that the transwave modulation is accomplished by 
modulating SLoop (Sample Loop). Is this modulation smooth or are 
there glitches in the sound? With other ROMs that aren't set up for 
sample loop modulation it's difficult to get glitch-free sounds out 
of this feature.

Thanks for any info.