If you are diving a single tank setup, it's unlikely you have any sharp bends the hose needs to make on its way to the inflator, so I think you're buying an expensive hose that you have to scrub with a toothbrush (!) for very little return.
I find LPI hose one of the more sensible miflex applications; a standard rubber hose that is not "the perfect length" can push/pull the LPI where you don't want it. Also makes it easier to lift to dump.
PS - I've done nearly 1,000 dives with a full set of Miflex hoses on all my regs and have never done anything but hose them off after a dive. They look like they're brand new. I'm as anal as anyone with gear maintenance... but it has never occurred to me to do more than that. Much less "scrub with a toothbrush" which I do hope you are joking about.