Since the tome gear is going to be inferior with allagan from the get go, the moment the allagan piece drops for the slot you already tomed, that tome piece would likely become useless immediately. 1-2 weeks's allowance down the drain and it would really hurt really bad if you happen to get both on the same week or even the week after.

If someone's really stingy with this kind of thing, would they pour their soldiery tomes into their secondary class instead of primary yet again? Yet another thing that becomes 'gearing up for alts'? Though I imagine tanks might get pressured into pouring their tomes into their tank gear. This likely won't affect me for a while yet but can't we at least have a 1 tome gear full refund a week feature for at least?