I have no problem with Loro Piana fabric. They make some great stuff. It's the 100% cashmere that concerns me due to wear issues. I prefer camelhair for overcoats for this reason. Still soft and luxurious, but is hard wearing.
The Ariston cloth is significantly lighter than the Molloy and Sons. It's not really a flannel, but is very soft for a donegal. I'd email Imperato (the online source for Ariston). They will send you samples for free.