Placement of Garmin messenger on backpack

Hi everyone,

has anyone had any experience with best soultions for placement of the Garmin messenger on the backpack? It has a hole for a small lanyard so you can hang it on top, but looking at the antenna, it seems like a horizontal placement would be the best. Is it best to put it inside the top lid of the backpack? In that case, I presume you would get some signal detoriation under the fabric of the backpack(?)

Any suggestions or experiences you would like to share?