Although these are not true saddle bags, they are plenty useful in carrying your daily commuting needs and still have room for basic tools and rain gear. These four bags were handmade by our forum member @Krixtoph who does outstanding leather work.
I have two Pony Express style bags along with an under the seat Stash Bag and a Crossbar Bag. These four bags give me all the storage space I need, but they would fall short if you are looking for true saddle bags that can carry extra clothes and gear for a long journey.
At a minimum I would recommend the under seat Stash Bag which makes use of the wasted space in that void area under your seat.