Flop a straight, decide to slowplay

[Deamon2]

Paradise Poker 0.25/0.50 Hold'em (5 handed) converter

Preflop: Hero is SB with T[img]/images/graemlins/diamond.gif[/img], 8[img]/images/graemlins/spade.gif[/img].
UTG calls, <font color="#666666">1 fold</font>, Button calls, Hero completes, BB checks.

Flop: (4 SB) 6[img]/images/graemlins/heart.gif[/img], 9[img]/images/graemlins/spade.gif[/img], 7[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(4 players)</font>
Hero checks, BB checks, UTG checks, <font color="#CC3333">Button bets</font>, Hero calls, BB calls, UTG folds.

Turn: (3.50 BB) 6[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
Hero checks, BB checks, <font color="#CC3333">Button bets</font>, Hero calls, BB calls.

Current Pot: 6.50 BB

SB seems to be one of the few people who knows how to fold in .25/.50, so I decide to slowplay my straight. Do you think it is worth it to slowplay (I only have about 40 hands of this player, not too much info)? If so, do I give it up on the turn?