So, this just happened...
The dock itself feels very nice. The plastic does not feel too rugged but it closes nicely with a very satisfying click. I've seen comments that the dock does not close well and this is not my experience.
I haven't tested the standard outputs but the HDMI works fine. The pixels are very sharp and beautiful. It's perfect for the retro pixel-loving gamers like me.
The stick included is a standard Neo Geo stick. It feels very similar to the PS2 and PS3 Neo Geo sticks released but the stick is a bit tighter and it lacks the 4 left and right buttons. Another question I had was stick compatibility. The Neo Geo X will recognize the PS3 Neo Geo stick. The stick and main buttons are recognized; the L and R buttons are not. The only problem here is that the ratio cannot be changed without opening the dock. I tried several other sticks to no avail; no Hori sticks were recognized and the PS3 Neo Geo pad is also incompatible.
I really like the Neo Geo X. The handheld feels great and has a very nice screen. The dock provides the look and experience I want. The handheld doesn't have any sort of start up sound and the dock doesn't have a power light so hitting the On switch and having no immediate indicator light up is sort of weird in this era. The OS is simple and has a slight hint of lag when scrolling but is still better than the Vita interface. The emulation seems to be really good. I compared SamSho and Baseball Stars 2 with their Neo Geo Station counterpart and both felt the same. The Neo Geo Station games looked a bit better since they are displayed smaller on screen but the gameplay felt identical.
Overall, I love this system and, if it gets great support from Tommo or, if they fail and the system is hacked, it may well be my "Next Gen" system.
The Neo Geo X stick works on the PS3!
LOOK WHO CAME: