thats an interesting idea....

i guess you wont know till you try it.

two issues spring to mind for consideration,

1. the purpose of curing is to "sweat" the buds so there is even hydration throughout the plant matter.... maybe it will leave more moisture in the center of the bud than on the outside, therefore defeating the purpose of curing?

2.you would probably need some physical barrier between the gel-pack and the bud, as the sillica is toxic and its usually in porous paper sachets, maybe placing the gel pack in an open ended cigarett wrapper in the jar would solve this.