Having had bad experiences with small pumps before, I thought I'd give the Blackburn AirStik a try. I've used Blackburn products for decades and the only failure I've had among the bottle cages, luggage racks, work stand and computers I've owned was a bottle cage that cracked after over 20 years of use.
The AirStik looks like it will last: it is really well made. A big plus is that spares are available from Blackburn. After a flat it had no problem pumping up my spare tub to 110psi.
It is very light and small enough to fit in my under-seat tubular pouch, leaving plenty of space for a spare, mobile, and energy bars. It would take up very little space in a back pocket of a traditional cycling jersey. A quality product.