Yep, both. I think he's more well known in the yeshivish velt than you think..
If he hasn't published seforim, has virtually no talmidim and lives out in the boondocks I don't see how or why the velt should know of him...
Any normal even haezer question i have heard of is usually handled by established botei din. The big shailos in even haezer are generally moved up to senior gedolim by the botay din. (R belski in the USA, but mostly R Elyashiv zl, R Nisim karelitz's and others.)
It seems like RNG has been used to pasken shailos for the more out of town type of crowd. Not necessarily modern Orthodox, but he is definitely not one of the regular yeshivish used poskim.