My Baader UHC-S is somewhat similar, though the bands are not quite that broad. The OIII/H-beta band exends well into carbon and the H-alpha band is ~35nm. Much like the Lumicon Deep Sky. It lets in a lot of stars and only slilghlty hints at the emmission nebulas. Not much going for galaxies, except for NGC 604 and the like. Considering the blue dropoff of the NV spectrum, it's no surprise that the 610 longpass does better on galaxies. A minus-red-taillight filter sounds nice though.
If you already have one, why not try it. My Lumincon h-beta filter is essentially a longpass. For purchase, it's likely only marginal benefits. Consider how helpful the lower longpass filters are in your skies as a guide.
Forgot to mention that sodium is still dominant here.
Edited by ButterFly, 27 February 2021 - 09:16 PM.