Yep, I just double-checked. Dalinar can revisit the visions at his leisure whenever he became a Bondsmith/bonded with the Stormfather. Anyone else would have to wait for a storm.
This would either mean that if it is the Stormfather and there was no storm, Gavilar was bonded to the Stormfather? I really really doubt this. Then again, he could have been which added extra fuel to the Stormfathers objections to a bond with Dalinar/others. Weak take, but possible.
Stormfaker becoming more and more real in my eyes.