I like it quite a bit; I know I keep using this, but it has that Ayler-esque Euro vibe that was happening in the mid-60s. Hazevoet's clarinet is ridiculous, as a matter of fact. Lots of wide vibrato and wooly soloing over fractured, but regular timekeeping. Much more 'listenable' than Unlawful Noise, as it stands, and both have beautiful covers.
Calling Down the Flevo Spirit (Snipe, 1978), duos with Han Bennink, I haven't got as into, but they do amuse.