I've bought a few basses from them. Their customer service is pretty neutral: they are not a-holes, but not specially welcoming in any way. I'm always begging them to give exact weighs of basses I'm interested in, and always have had a hard time. It seems they have all the basses in storage and it's a pain for them to pull them out and get them to where the scale is. So I gave up on them a while ago. If I can't know the exact weight of a bass before buying it, I won't buy it.
But kudos to them for always trying to keep stock of lefties.
That '58 CS looks delicious, BTW, although I'm not a fan of 1.75"-nut necks, or $4000 P-Basses.