I think honeycomb shades are really about appearance, popular with Airsofter's etc. - an inch or so of normal tube sunshade is enough if you're bothered by glare & I don't think it will be OTT at all.
They do work well enough though, I had a look through a couple back when my son was into Airsoft & couldn't see any obvious degradation of the sight picture though I suppose it must have been there to some extent.
If you think the rabbits will see scope glint & drop a load of mortars on you, I'd definitely get one.