I'm hopeful he can make the switch and be an upgrade, but I'm pretty skeptical actually. He's been in the league 3 years now, and still hasn't been able to claim the starting job at his "natural" position and thats competing aginst Gandy primarily. Don't get me wrong, Gandy played well enough, but really he shouldn't have been able to hold off the number 5 pick in the draft for 3 straight years. Brown appears to lack the quickness and feet to go up against the speed rushers he'll see week in and week out at LT. I really think they should put him at LG and draft a LT fairly early.
The line I'd love to see in training camp/preseason is LT Draft pick (Veldheer, or Fox), Brown, Hadnot, Lutui, Johnson.