Matt,
Placing the LS in a pack works fine when you are not using it to navigate, or stake out line. Removing and replacing the unit from a pack can be frustrating, and time consuming when doing it frequently, and in some of the terrain where we work.
There are times when finding a place to set the pack can be an issue.
I agree that the engineering of a hybrid model would be a challenge.
An alternative to a hybrid model could be a quickly mounted bracket that could be placed directly beneath the antenna that would hold the Victor LS or other controller in a vertical or near vertical orientation.
Perhaps, a quick release mount for the pole connecting to the Triumph LS that would maintain the measured height of the pole, saving wear and tear on the male and female mounting threads. I could then place the unit inside my coat or a padded case using a carrying strap, and place the collapsed pole in a scabbard on my side. This would allow me to check my location quickly and easily as well as allowing me to use both hands for climbing, balance, or using trekking poles. The Javad rods should not be used as trekking poles, but I have been guilty of doing just that on more than one occasion.
I truly appreciate having the display at or near eye level when staking, or collecting data, but I am also concerned with protecting the equipment from damage, and being as efficient and productive as I am able.