It's only difficult if you let be. It is a different instrument, so you have to approach it differently. What we play is called and electric bass guitar. The big boy is called (among a lot of other things) a bass cello. The two basses have the same idea, as in bass lines, tuning, fingering, etc. But they're built so differently you have to almost relearn the instrument before you start applying bass chops you're used to. I came from the other direction...I learned on the double bass and then one of the other bassists in the orchestra brought his electric to school. When I tried it, I knew it was for me. So I dropped double bass and started learning electric bass guitar.
On a side note. I mean, how many names does that fucker have?
Here's a bunch I can think of:
Double Bass
Contra Bass
Stand-Up Bass
Acoustic Bass
String Bass
Upright Bass
Bass Violin
Bass Cello
And now you guys with your Vertical Bass...!
How many more...???