Nice looking tool, couple of drawbacks vs the Brompton - the frame fitting is a real bonus for the Brompton for travelling light days, Wearing regular trousers with a smartphone, wallet and housekeys in the pockets already, a multitool with patch kit box is going to be a very tight fit or uncomfortable lump extra to work in????
A couple of glueless patches also sit nicely in the Brompton tool so it really does't need the extra patch box to add bulk or lose in the cold and wet at the roadside.
The allen keys/screwdrivers in the Brompton kit are the ubiqutous interchangeable head types o easily replaceable if damaged or worn & on a longer lever ratchet too, so are a moment of simplicity and more than enough leverage to use in even the tightest of spots, more akin to using a 'proper' allen key set v the more standard stubbier multitool, style on the Tern.
I was wondering about the 15mm spanner in that vid and was pleased to see that they had thought of that and made it more effective than first impression, but the Brompton again is a more solid one by the looks of it, ring headed so less chance of nut rounding (or knuckle skinning) slippage and is a comfortable doddle to use with the tool 'box' designed to act as the wide long comfortable handle, it is set up with the ring head already out so it works immediately without any faff or construction at all.
On the upside for the Tern tool - it is less than half the price and the nifty looking chain tool included within the unit that has clearly been well thought out and seems a better thing that a usual multitool chain tool device are both real winners over the Brompton one.