I am keen to hear the Devs opinions on how this was envisioned to work to maintain game balance.
My own biased opinion (as a caster) runs like this..
Spell has a duration in Days...Put it in a Matrix/cast it/reattune matrix with a 10 minute downtime with another spell and enjoy for multiple days..

Spell has a duration in Hours...Put it in a Matrix/cast it/reattune matrix with a 10 minute downtime with another spell and enjoy for a few hours..

Spell has a duration in Minutes...Put it in a Matrix/cast it/do not reattune matrix so it will always consume a matrix slot and keep casting it every few minutes you are in a dungeon/on watch/expecting trouble etc..

Spell has a duration in Rnds...Put it in a Matrix/cast it when you are already in a fight and it will always consume a matrix slot

There is of course the opportunity to reattune on the fly which is what you might do to your minute duration spell matrixs in combat but I just wanted to hear what the intent was to make sure my interpretation wasn't perverting the intended game balancing function of Spell Matrixs..
