Sgian Brew ‘blades’ – Testing Some New Styles

Here’s 3 new  ‘blades’ for our safety / bottle opener ‘Sgian Brews’.
These are prototypes of our own exclusive designs and we’re looking for feedback before having a larger batch made.
From left to right are:
1: The old style cast Stainless Steel generic opener which we’ve been using which doesn’t have much room for engraving.
2 and 3: New styles with and without a taper on the blade section, these would also need to be worn without a sheath.
4: A different style which is more blade shaped and fits into one of our existing sheaths.
The new designs are 3mm throughout their width – so there’s no sharp or even thin edge which could be sharpened.
We developed the ‘Sgian Brew’ some years ago when it started getting more difficult to travel or gain entry to some places while wearing the traditional Sgian Dubh.
I often find that a bottle opener is pretty useful on the occasions that I’m wearing my kilt anyway !
Which one is your favorite ? Do you have any suggestions ?