Is the sector nine "barra" from the bamboo series a good long board to slide?

yeah, this is a fun board for sure. my friend has one. I wouldnt say that its made for sliding, its more of a cruiser. but you could definitely learn to slide on it. my friend with this board can like a pro. the first thing I would do if I were you is get some orangatang sliding wheels. they will make a big difference. have fun with your board!