Accepted answer: no
I've recently unlocked the Mortar for the Support kit which I've been wanting to get my hands on to take out pesky snipers. I've managed to get a couple of kills before someone hunts me down and shoots me in the back or I get killed by an enemy mortar. I also have difficulty hitting moving people as the shell takes around 8-12 seconds to impact the ground. I use it extensively in Rush around the MCOMs - both attacking and defending - by firing in the general area of the MCOM and I end up with a couple of kills or kill assists.
It it a good idea to stay in one spot, or fire a couple of shells, move, fire a couple more, move again, etc?
How do I switch between smoke/explosive shells? Or is it an unlock for the mortar?
Is there any point in using it against heavy vehicles (i.e. Tanks, AA, etc?) or should I just use it against infantry and for taking out enemy explosive?