Amelanchier

Hi all,
I'm trying to make my (very overgrown ) garden more wildlife-friendly. Currently tackling a strip of land between the house wall and the pavement which is nearly 12m long but only 1.5m wide. Can I plant an amelanchier there? I've seen amelanchier grown as a hedge before, and I've also come across wild/naturalised amelanchier bushes which were quite compact but obviously I don't know which species they were.

I'm most enamoured by A. x grandiflora "Robin Hill" but that could grow to 8x4 m apparently though obviously can be pruned.
Also, I've read somewhere that the x grandifloras are best planted in pairs to get a decent crop. So I was wondering, given that there are a few hybrids (including grandiflora itself), could I pair a Robin Hill with a more compact form of a different species, e.g. A. Canadensis "Rainbow Pillar", or one of the better-fruiting ones, e.g. A. alnifolia?
Any comments greatly appreciated. TIA

 

I have an Amelanchier lamarckii in a large tub (the same one for 5 years) but no experience of the varieties you mention.

My point being, a 1.5m border shouldn't pose a problem because any roots will find their way deeply into the ground. In fact, I would suggest that the top growth will happily over grow that 1.5m mark, so that keeping your path clear would be your most challenging/time consuming task! Cue hedge trimmers!