Interested in data from those who really know the market but based on a bit of reading (light googling, i stopped well short of paying for research reports like https://www.transparencymarketresearch.com/pressrelease/folding-bikes-market.htm) there should be solid growth over the next 5 to 10 years in the premium folder market.

Ti aside, considered purely on spec, I think it is a relatively attractive proposition for affluent urban comuters, offering a new sweet spot in the standard folder trade-offs of weight, folded size, ease of fold and maneuver whilst folded (all of which compare well with a Brompton give or take), 'speed' and normal ride feel (i think 24" vs 16" wheels makes a big diference on both, and opens up the appeal of Helix to those who might currently go for a non-folding hybrid).

On spec - As you say, this remains to be proven in practice. The production sample certainly looks promising.

I think people get hung up on Helix being uber high end on account of the titanium. I see the material not as a feature in itself, nice though it is, but a means of realising the design at a lower weight than otherwise acheivable thereby maximising that sweet spot. In theory extensive automation and innovative techniques will mitigate many of the factors driving the traditionally high cost of titanium frames. Again, how much, remains to be seen.

If the Helix ends up being a top-end enthusiast's option I think it will be on account of pricing rather than the balance of features. Based on KS and pre-order pricing we can probably guess where they were aiming pricewise, putting it perhaps in the ballpark of fully laden, top end Bromptons, Birdy, some Tern Verges, some higher end Airnimals etc. Whether they can hit that target given actual manufacturing and operating costs remains to be seen. Many have speculated that the KS pricing was grossly under-egged. We will find out soon enough.

With regards to practicalities, these are all options Helix can offer similar for and nothing stops Brompton luggage being used with appropriate mounts if that is your bag (lame gag, i know, but couldn't resist). It is of course a cost factor in like for like comparison.

I am a multimodal comuter and have comuted using road bikes, docked and dockless bike shares and roller blades.

I continue to use bike share schemes but i generally prefer to comute on my own bike. It is always on hand, door to door, set up for me, light, quick, aesthetically pleasing, sports clipless pedals and even forms part of my sense of identity.

I do chafe at the downsides of a bike for this use case of course. Space, theives, train restrictions, can't take it on buses and in taxis so if if i cycle there, i have to cycle back come rain, beer, aging knees or social plans.

Folders of course mitigate many of these issues and i looked at many of the options there. The compromise on light and quick with the addition of, to me, a squirrely ride has always put me off the Brommie. Options which mitigate these considerations are compromised in speed of fold, partial dismantling requirements and/or folded size.

I hope Helix will hit a sweet spot for me and have been happy to take a flyer on it. Among backers, i'm not alone. I hope, for Helix's sake, that among commuters in general, we are not alone .