Digital BW, The Print

Digitalartsupply.com has William Turner 310 13"x39' rolls for
$109.95, 
which whould yield some were around 24 sheets of 13x19 paper.

How hard is it to cut the paper to length and will it lay flat after 
cutting? I like the idea of the paper coming in rolls anyway, because
I 
have been playing with the panoramic format lately.

Thanks.

Steve