I've always been curious, is the Voile Fabric safe to machine-wash, or do you have to rinse/wash it by hand between batches? The 5g paint straining bags work ok for me, but if the voile is more durable (only get about 4-5 batches per bag before they start to fray) and it is easy to clean, I was considering it as a small upgrade.
Also, as for OP's question about 10g bags, I have never come across them at a hardware store and doubt they exist since they are designed for 5g buckets that painters would use. What you CAN do though, is use 2 bags at once. I did this for a big IIPA and it worked like a charm. I was able to fit as much grain as my brew-pot could hold. Of course, I use a shorter/wider pot that was originally meant for steaming crabs and is wider than a lot of turkey-fryer type pots that are a little taller/thinner, so fitting 2 bags in side-by side wasn't an issue at all.