Ideal for semi-permanent circuits bad for frequent repositioning

Anticipation the only drawback: Who often need access to the pins, will have to fiddle a bit, it is certainly, but it is not comfortable. (Unfortunately, I know of no other case which provides more access; this perhaps: SunFounder Uno R3 Case Enclosure New Transparent Acrylic Gloss Computer Box Compatible with Arduino UNO R3?)

The area of ​​application are therefore reasonably permanent circuits (at least for the Arduino pins). To protect the Arduino before contact, bumps, dust and in such cases, I think the housing optimally:

Processing works very well: fit and sound
The plastic is very clear (no gray veil, etc.), so that the Arduino can be look in the living room
It comes on the air ATmega perhaps not necessary, but certainly not wrong in continuous operation
Wall mounting (hanging on two screws / nails)

Conclusion: if you can live with the slight restriction of pins, gets a well-made, well thought-out and attractive housing.

PS .: If you value the reset button should look briefly whether this is in addition to the USB port (which is in official boards since Rev. 3), because there is in this case the access.