I rake, 3 fingers, RMIRMIRMI, cheat any which way I can to remove any unnecessary motion. As far as feel goes, I don't have an issue with timing, and I use left hand muting for staccato; since we are talking about descending lines this is simple.
Also use RH muting using next finger in line and recommend playing open strings ultra staccato using RH muting only at low BPMs since it helps build speed, feel, and muting techniques. Absolutely horses for courses. Oh and 3 finger RMI means I have to be able to start almost every groove on any finger, thats pretty much a given... (only exception I can think of being heavily triplet based like 'Violent & Funky' by Infectious Grooves)
There is always a battle to maintain the 3 finger technique and callouses such that there is no really discernible triplet accent in there, but that's another story.
Alternate if you think it helps you, not doing so just hasn't stopped me expressing the feel that I want to....