Would Oblivion Reloaded custom effects work for New Vegas Reloaded? How about Reshade shaders?

Super impressed by what NVR is able to do, doing everything in engine, and the inclusion of realtime shadows is really damn impressive.
Its what every ENB and graphics mod out there can't do. Shadows add so much to the depth in scenes and overall image quality.
I was looking into the documentation and noticed the custom effects section, however, seems not a lot of custom effects have been uploaded for NVR.

Is it possible to simply reuse OBR custom effects here? Also, is it possible for us to reuse or port Reshade based shaders into NVR?

OR .fx files should be fine. But if the files include a plugin, you'll have to port that to NV. I don't know how ReShade plays with OR/NVR. Try it, but officially, Alenet does not support outside apps like ENB and ReShade. Having said that (I know about ENB from reading), you can get them to work, it just takes some tweaking.

OR and NVR are exactly the same because the TESR engine is common.
You can create the effects you want and use them as custom effects.
Custom effects are image space shaders (not per geometry) and you can create them from scratch or you can port them from where you want but they must be compatible with TESR (so you must rearrange them if ported).
You can use a script to pass needed values to the effect (all available commands start with NVR prefix in GECK scripting).