I've tried Funakoshi-v4.5 and EWBF-v0.5 for Bitcoin-Gold mining on 2miners.
Here is my tweet...of course in Japanese:)
https://twitter.com/ohashi3d/status/1038554573357572097
Ubuntu 16.04 with nvidia-396.44(CUDA 9.2), for both the single GTX1070 system and the rig(composed of 8 GPUs).

* Edited *
I'm trying v4.6 now:)

* Edited #2 *
My tweet:
https://twitter.com/ohashi3d/status/1038918179949408256
Though EWBF-v0.5 keeps advantage in my environment,
I feel there is no apparent difference in actual rewards, such as in hashrate.