Second stem - good idea or plain dumb?

Wanted to share an idea I had to clean up my handlebars and have a better front bag solution. On my MCD I’m running 4 10mm spacers under the stem and it occurred to me if I found a stem with a relatively short stack height, I could fit it underneath the real stem and run a short bar to mount bags an some other things. 

I haven’t seen anyone do this (not nearly suggesting it hasn’t been done), so I thought I’d check with you folks and see what you thought about the idea before I go out and ride it too far!  

I found a cheapish carbon stem on aliexpress (“ec90”, 70mm, -17 deg) for about $30 and bought some 32mm carbon tubing from a model plane parts site for $10 and rubber stoppers for $4 and here you go. 

   
the stem seems adequate. Not sure if I’d trust it with my life, but I’ll trust it to hold a bag!

anyway, I’m curious if anyone sees some pitfalls here, or if you think it’s a decent idea. For what it’s worth, everything seems to have mounted cleanly, headset adjusted without issue and there are no clearance problems I can see. 

Thanks for any thoughts!

Very interesting! That looks like a steel fork so can likely take some squeeze that could stress a plastic (composite) steer tube. Maybe it's from so much mountain biking and river running plus small boat sailing but I tend to keep stuff put away until needed, and never have my phone or a trip computer out. I would have one or both of a frame and tank bag I don't see in this setup.

I'm aware of these that might be a compact but also maybe heavier solution.

https://swoodcycles.bigcartel.com/products