nebula filters for binoculars

Hi there,
Anyone ever tried the howie glatter nebula fiters for binoculars or anything similar?

Sanders

I use my orion Ultrablock filter in front of the eyelens of my 15x70's. I was viewing M16 and M17 for the last 2 nights and both nights the filter resulted in a better view of the nebula on each of these. Only get to cover one eyepiece with the filter, but it works like a charm. M16 begins to show up so you don't have to ask yourself, Do I really see a nebula here? M17 is outstanding and the upsidedown swan shape can be seen more readily with the filter than without.