I don't think there's any catch there necessarily. I think you're wise in trying to find the best one for you. Playing in alternate tunings does offer a lot of variety, but making a commitment to one in particular, like CGDGAD, which is a nice one, will breed familiarity with it and the potential for getting more enjoyment and reward from your time investment.
It's a plus too if you can dedicate one guitar to it to minimize constant re-tuning hassles.
The other side of the coin is someone like Michael Hedges, who first heard the music in his head and then picked the tuning that would match it best.
So I would say, take your time in choosing, and keep an open mind about tweaking things too if it happens to help you better achieve whatever it is that you've tapped into.
As Hedges said: "The secret of discovery....is extremely sweet."
