I haven't yet seen a 3D film and I don't plan to see one in the near future. However there's an obvious problem here, because if the cinemas are investing in new technology then they have to recoup their investment by getting people to pay to see the films that use it. I understand from other posts here that the surcharge for 3D films is imposed by the technology licensors rather than the cinemas themselves but presumably the cinemas have to cover the costs of the new equipment, including the cost of installing it.
So there's now less incentive for cinemas to show non-blockbuster films because they need to show the biggest films to make full use of the 3D equipment.