absolutely, wash at 30 degrees keeps the bag clean.
A silk liner.....a top tip....
Great price, wish one of these had been available at this price when I was looking to buy 6 months ago. Ok, so only 650 fp, but can't see you getting 800+ for this sort of money. Comfort rating of -2C makes this usable in all but the worst conditions. it's hydrophobic down, so will be practical in damp conditions (down being useless at keeping you warm when it's damp) Tip: get a silk liner (tiny and light) to go with it so you only wash the bag when you absolutely have to... will extend it's usable life. Hot! Edit: An alternative would be a Vango Venom 600 sleeping bag. £160 from here: https://www.outdoorgear.co.uk/Vango-Venom-600-Down-Sleeping-Bag-sku52412902.asp Similar spec to the Rab for a little les money.
I hope not
I have that sleeping bag (Aegismax aegis mini) it's very good, but not comparable to this one. I'd say it's good as a summer sleeping bag, the only time I have used it 3 seasons and have been comfortable has been with high end 4 season gear (mattress, liner, base layers). But it depends on so many factors. For a comparable Aegismax product, you'd need to look at something along the lines of the aegis d series, maybe the aegis D2.