For the price, and considering it can provides phantom power, take 2 XLR mic + 1 3.5mm input, it would be a good thing to have in your gear yeah. The only thing that bugs me is the size 6x4x1½ is a bit big to mount.
I'd say, as the Azden can run on a AAA battery, you should go with a JuicedLink: I have that setup and it works well. Paid it a bit less than 150$ used if I remember well. The smaller model doesn't provides phantom power but it has a very good preamp built-in and as you're using an HV40, like I do, you can get rid of the HV's noisy internal preamp and boost your sound with the JuicedLink, which does the job better. It can easily be mounted:

My 0.02¢