not square, but reliable and good

The hand strap of Canon is really quite good. Very soft and comfortable to wear, the price is still tolerable and above all not much higher than the third-party.
But now comes the but:

1. It can be used only in conjunction with a battery grip. That's not bad in itself, because if it would be in the item description. Who has long been familiar with the EOS system, the white of course! It is even in the manual of the BG ... just not here. It can be deduced indirectly, since compatibility is everywhere given only with the EOS 1xx (which has indeed integrated a BG).

2. Once you have realized a BG and this strap is mounting. What I did this did not like was the fact that you had the assembly instructions Search / call on the internet. For this purpose it was described in only a few images whose interpretation was not always clear-cut. So you should take a little time. I think in 15 to 30 minutes should it hammer out most.

3. Is it only once tuned, do not want to miss one it. Very comfortable and pleasant soft she is ... but it takes until you have his personal perfect setting found. This is a compromise between a secure hold and still room to move. This one needs to still namely the setting wheel to operate, which is no longer to achieve with close to settings.

4. The attachment is only two points. An (unfortunately) has better system here this time Nikon that I really need to admit as Canon advocates. The 3-point system is much more useful and more secure, you can only hope that Canon learn from it.

In any case, it thereby increases the safety of the camera, as if they really slips times out of hand, you appreciate the E-1. One can also just let the camera dangle times and relieve his hand.
Very nice is also the possibility of further use of the strap (although I find it personally disturbing, because it slips in the vertical position in front of the viewfinder)

All in all, a very good processing and good handling. Due to these "flaws" only 4 star.