Just to follow up... I bought the mic. It sounds downright bitch'en on a guitar cab. I just finished recording a song with about four or five guitar parts, all recorded through the M88RP and it beats anything I've recorded before with dynamics or condensers all to hell, for electric guitars at least.
No problem with getting enough gain from my Mindprint pre... everything clean as a whistle. Of course it's shy on the top end, but I came up with a contour for my plug-in EQ that I saved as a preset, one that's basically a bit of top boost and slight dip in the mids. The guitar parts sit right in the mix and sound *real*... like you're "there".
Badda-bing, badda-boom. My new "go-to" electric geetar mic, fer sure.