Outer Vinyl Sleeves, is it a good idea?

I ditch mine immediately. PIA when taking records out of rack. In fact, I guess it was record sleeves that were the tangential inspiration for me to build my own record storage racks of the records are all front facing.

I use those really clear outer covers. Makes the album cover look almost new. No mold. Record store front-facing storage so much nicer than trying to read spines. 

I recently put my entire music collection into Discogs.  I decided on a guideline that any LP worth over $20 gets a protective outer sleeve.

I use them. Protects against ringwear. Never any mold issues. You can get sleeves that are crystal clear. Sleeve City is one company that sells them.

Outer sleeves bug me and take up space. I toss ‘em.