We're obviously straying off topic (there are several threads specific to the R/R subject on the forum) - just some clarifications on your own experience.
I've actually written extensively on the subject of failures on the V-Strom on those forums.
Series Regulators for Enhanced Stator Reliability
First the actual replacement R/R we are talking about for the Rocket
IS actually from a VStrom - however it is specific to the 2014+ DL1000A - it is indeed a Series Regulator. That model is a SH847
You mention replacing with a MOSFET - a MOSFET R/R is NOT a Series R/R, just that the Shunt devices are MOSFETs rather than SCR's.
The early recommended replacement module for the VStrom was a SH775 - I think you will find reading the linked thread above, I was the one who brought that to the VStrom community and a fellow called Greywolf was the first adopter to actually test it on a 650 VStrom.
Regarding 'cutting the OEM harness', a very inexpensive Triumph adapter harness (yes, a Triumph part
) could be used to install the SH775
From that thread, the discussion turned to the new module used on the DL1000A (the SH847) - I believe I was the first one to actually procure one for use on anything other than that OEM application - that is still on my bike today (and the one I am recommending for the R3)