Hey there Loomis, glad you gave SP a listen. Yeah...they're probably not an A-list band though for me personally, I found their music melodic enough...kind of quirky and enjoyable, even. But, hey, horses for courses as they say. I will sample Hiss Golden Messenger and Trespassers William. Spotify's got em both and the exact recordings you mention. Can already tell you I like HGM's song titles.
By the way, to you, Pokey and everyone...have you listened to Gary Clark Jr.? Great guitarist, vocalist and song-writer...blues/rock or rock/blues...whatever. I especially like his 2010 GC, Jr. (photo on the cover of a little kid wearing head phones). Can only find it as MP3, unfortunately. Music styles are all over the map on that one but the song writing and performances are strong. I see he was being compared to Jimi by some. Seems to me to have his own style but on an emotional level does seem able to go where Jimi went Vs just doing Hendrix riffs a la Trower or even SRV. I'm probably late to the party as usual but just in case he's new to any of you....
Later. Ciao.