Bought mine around this time last year, I picked it up from Peters home/office, tried a couple of sizes on with my bike gear underneath and had a test inflation as well as advice on where to tether on my bike.
They are expensive but I'm glad I got it, I considered the cheaper HitAir, but after watching videos I could see the HitAir (might have been updated) inflate where as the Helite seemed a lot faster. The question of how fast is fast enough? I've no idea.
I hope to never need it but I'd not want to ride without it. The only time I don't use it is greenlaning, as I don't want to get it caked in mud and risk puncturing it.