Olympus 'Body Cap Lens' for m43

I just read about this Olympus "Body Cap" Lens for Micro-four-thirds. f/8, 15mm, infinity focus, for $50.Obviously, it's not going to be a super high quality lens, but am I crazy for considering this to put on my E-PL2 for everyday carrying purposes? It's just so much slimmer than the 20mm prime I have now, and makes the camera much more pocketable (and that'd be even more the case with the newer E-PL bodies, or the E-PM line). Of course, when I need high quality stuff, I'd obviously bring my good lenses. Olympus_15mm_-thumb-512x387-2405_medium

via thedigitalstory.com