The Eclipse 180 is a nice bit of kit, it took me ages to find an affordable one. They often sell for £100 plus on ebay.
The thin piece vice is another of those tools that are handy for some sheet metal parts, I have one of those as well but to be honest I dont use it anywhere nearly as much as the Eclipse.
It is very rare I need to adjust any of the angular settings on my Eclipse, why not make your own copy of the Eclipse vice head and just hold that in your normal vice.
Phil