I've had some good luck with Hanssens before (their Oud Gueze is phenominal), so when I saw their black currant lambic I had to give it a try. I just planted currants last year and I'm looking for something to do with the black ones in particular.
I haven't met a lambic I didn't like, but this one is pretty meh for me. The carbonation just isn't there, and the aroma is like being assaulted with a horse blanket. The berry flavor is overwhelmed by funk, and the acidity could stand to be kicked up a notch. Still, you can tell that the pieces would fit together really well if the balance was a bit different. The tannins from the currants are a good fit to a sour like this. If you roll back the funk, up the acidity and get the carb level right, this would be one hell of a brew. I'm thinking that my black currants will be getting a sour-wort Berliner weisse racked over them this fall.