I would honestly think it would be worth it for Stewart to sign-up and ride the 'Q' sessions just so he could see how his Suzuki set-up and speed is compared to his direct competition. Then, he could pack up and watch the race having learned good information.
07 Yamaha R6
07 KTM 950 Super Enduro
04 KTM 250exc- plated two-stroke
01 Kawasaki KE100
74 Honda MR50