Have them, they are great, but being only 20/24h is a big limitation as I see it. Much depends on the type of riding the op is going to do, for street riding/commuting I see no reason not to lace 32h wheels.
It would be 90% street riding with the odd commute thrown in, do you reckon in this case a different hub that can support 32 would be a bit more bulletproof long term?
I personally think the DT Swiss track hubs are fantastic.