About the comment above: "PWDVA didn't spare the Chinese too? Lol". I think "Chenese Chef" is not Chinese citizen, he cooks Chinese food ! :) Anyways jokes apart...
I heard DV dismissal is practically impossible, though in 498a it could be. It is crimal provision more spans than CrPC125, which judge won't agree to drop. So court will likely refuse. Judge will independently orfer maintenance, only the higher amount you'll have to pay. About maintainability, AFAIK maintainability is decided by judge, fo that one need to go into merit. If DV is non-maintainable it will be dismissed and diposed in judgement, not dismissed even before it started. I don't know for sure, but seen some judgements saying unmaintenable. That means waiting till judgement.
I also have a similar question, is DV dismissal possible when wife moved to another city after filing DV, DV is in her hometown where only her parents are attending. Even in her allegation no instance was cited in her hometown. Can this be dismissed based on jurisdiction issue.