To be honest I think if there is a print run at all for FLGS's, that print run should be in hard covers. To be sure, that may reflect my own prejudice in favor of hard covers over soft covers. Nonetheless, soft cover editions can be had through PoD, so to some extent you'd be competing against yourselves, and in addition there are those few like myself who would rather buy the hard cover at the higher price than the soft cover at the cheaper one. Having a hard cover edition at the FLGS gives customers a reason to buy there: The product they really want flatly isn't available by any other means.
Whether there's sufficient demand, I can't even guess. Yes, I'd love for you to do a print run just so I can get exactly what I want... but if I'm the only one, well... I'd love to have one, but I'm not gonna buy a thousand or so just to keep them from being remaindered.