The whole rosewood/maple thing has never really impressed me much. A vibrating bass string does its vibrating between a fret and a bridge saddle. If the string comes into contact with the fretboard material then it makes a horrible buzzing noise.
End of.
Now if we're talking fretless basses, then it's a whole other thing of course.
I've played fretted basses with fretboards made of maple, rosewood, ebony, graphite, ebanol, you name it. None of them sounded sufficiently different from each other to attract the slightest attention on a Saturday night at the Dog & Duck.
I like that wild blue Hofner stuff because it's wild and it's blue. I doubt it will sound any different.