Haha, i happen to have the opportunity to get my uke (k-wave, vintage white) autograph by Chris Ramos.. i just want to see a number of hands of who would do it if they had the chance. Hahaha, i don't know if it's worth it! :
Chris Ramos is a terrific player w/ a good voice. He's smalltown right now. Everyone kind of hyped him because of him Break Up Song, but if he'd make more songs and put out an album or cd of some sort, he'd be up there. He's working on it.
As for now, I wouldn't worry about it. I wouldn't be surprised if he was on the uprise. You should've chose a less-valueable uke than the K-wave though. I love how those are made. Tele-uke!