The only downside I found when shopping for gun insurance, in relation to eastern/historic and more than a few others ( NRA included) was how they value your pieces.
This may have changed, but as of 3 years ago, they valued lossess based on ACV, not replacement value. Unless you have appraisal certs for each of your guns performed on a yearly basis- this can be really bad in a total loss.
My Farmers floater costs about $120 per year for my small working collection. I'm fine with that. Yes, they have the serials. So do the people I bought them from. CA has two of them ( the serials, with my name and a thumbprint) in a safe somewhere.
If my guns are lost, I know what I will be getting for them- brand new or like new guns, or a check for their replacement.
For those of you with ACV policies on milsurp collections- I feel for you if you have a serious loss.
As with all insurance :
#1 Find someone you trust.
#2 Have them explain your coverage to you. Then explain it back to them to make sure you understand.
#3 Premium isn't everything. " A pound of premium doesn't buy a penny of service" has never been truer when it comes to a gun loss.