Got my 800 micron spider, used it yesterday for Blonde on Blonde which has .6 ounce of Cluster(whole) at 60 and 1 ounce Sterling(pellet) at 10. I also pumped my wort into the spider at the bottom of the kettle from the tun. Just to see how it all worked I lined the Speidel with a brew bag for a post filter. Had MAYBE a 1/2 cup of sediment in the kettle after it was drained and another in the brew bag when I pulled it out. I'd say that's a successful solution.
Not sure hop it's going to affect hop efficiency, but everything seemed to flow without much of any restriction.