This came up on the TR Register a while back - I was surprised, but for the folks who had them I think the recommendation was positive. I'm still on the fence because it
1) clutters up the engine bay in my opinion (okay minor)
2) is another maintenance item at some point
3) doesn't change the fact that you still have a single circuit system.
Item 3) is the biggest thing for me - I'm still leaning possibly to Revington's duel setup, or a mod to a TR6 dual mc with booster.
Randy