I'd seen them.
I have an lt1083 feeding a quad of parallel lt3045 into my Brooklyn, it sounds a little bit better than the internal smps. A triplet of non protected 18650, Samsung 3400mAh sounds quite a bit better. So I have no worries about Ian's supply, even if he is lacking his usual measured follow through.
When you say quite fancy linear psu did you buy it in or build it? I tried a couple well regarded Chinese linear psu, they were crap way off spec for noise. Very disappointing.
The lodvr dx power should also be very good, state of the art numbers.
Kuzma Stabi/S 12", (LP12-bastard) DC motor and optical tacho psu, Benz LP, Paradise (phonostage). MB-Pro, Brooklyn dac and psu, Bruno Putzeys balanced pre, mod86p dual mono amps, Yamaha NS1000m