A. Yes, but it's important to understand linen's nature. Linen curtains can look absolutely stunning in the right circumstances, but being a natural fibre, it can be a little temperamental in certain conditions. Natural linen holds creases even after steaming, and can expand and contract with different levels of humidity; meaning the length of your curtains could change by 3-5% depending on the weather!
We also carry plenty of alternatives that either look identical to linen, or contain some linen; this way you can have the look without the trouble (or the hearty price tag!)