Oh ... 99% of the time even with only one 14 ... you DO receive information with the other eye. It might just be dark shadows ... but it HELPS.
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If you really want "true" fusion, it can be had. Two ways.
AN/PAS-29 ...
https://****.com/wp-content/shopp_images/cache_320_320_0_100_80_16777215_COTI_mounted-1.jpg
This little guy clips on to your pvs-14 ... a thermal clipon for a 14 ... it projects the thermal information into the front of the pvs-14 objective.
It is not as good a thermal (smaller lens, 320 imager) as compared to my q-14 ... BUT it is "true" fusion, not "poor man's fusion" like I am trying to do.
AN/PAS-29 can be weapons mounted.
Note how the thermal is "peering" around the side of the glass EOTECH which it cannot see through. Yet in this case the operator still can see a fused image. The reticle is provided by the eotech and the NV by the pvs-14 and the thermal by the pas-29.
If you had nothing, then a full setup for pvs-14 with a coti and a helmet and mounts for the helmet and the weapon might run $11k. If your pocket book is heavier there is the ENVG
https://****.com/wp-content/shopp_images/cache_320_320_0_100_80_16777215_DSNVG_1-1.jpg
This is a single unit so even closer to REAL true fusion ...
IIRC, this one runs about $15k, though with helmet, etc. Make it $16k ... this one isn't weapons mountable (I dont' think) ...
Either pas-29 or PSQ-20 can be used with an ir-laser because they are i2 devices as well as thermal.
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Two pvs-14s and a good helmet with mounts and weapons mounts might run $7-8K ...
One pvs-14 with a helmet and mounts and a weapons mount maybe $4k.
A usable ir-laser $160 or $220 with pressure pad.
A good ir-laser $800 with pressure pad.