Interesting name for a pen given Icarus's fate. Thankfully, I don't see this particular model burning up in flames: the construction and materials involved seem to be bomb proof, and the filling system is simple yet convenient. I have no concerns about throwing the pen in a bag and heading to class. The hourglass section and general ergonomics also deserve special mention as this is quite a comfortable pen to use!
The construction, while quite hardy, is a little rough in spots, which is quite acceptable for a hand-made pen at this price point: the threads might have some not-quite-cut material in them and the feed will require a toothbrush scrub to get material left over from machining out of the fins.
Overall: practical, flexible, quite comfortable to use, a minimalist aesthetic that doesn't draw undue attention, a little rough around the edges, and quite affordable.
In other words, the anti Mont-Blanc (which is high praise in my mind)!
I've often seen the Ahab, and Noodler's pens in general, labeled as "a pen designed to be experimented with" (a phrase that, to me, simply is an excuse for a pen that cannot write decently out of the box). In my mind the Desiderata pens are the ones experimenters should be going for; not only do you get a pen that works well out of the box but you get a great platform for trying various feeds and nibs.
I've currently settled on a vintage nib to use with this pen that I find delivers excellent results. Hopefully it may inspire others to see the value and potential in the Desiderata pens.