bit of a toss-up as to which is less suitable for our glorious climate; them or alloy spoke nipples..... 
cheers
Oddly, I’ve never struggled with the wheels I’ve used alloy nipples on. There again, I’ve never needed to true them.
Here's to hoping that you never need to then, my LBS won't even try anymore they just rebuild using brass nipples.
Quicker easier & cheaper than faffing around trying to free the seized alloy ones.
2-3hrs to strip & rebuild V's all day to unseize and true up.
I've got three wheels with anodised alloy nipples, on an ICE Vortex FS trike, and the first thing I did was to rebuild them using copperslip.
Even though they were 'New' I had to replace around a dozen spokes & nipples where they had seized and had to be cut off.
Not had any problems with corrosion/seizing in 9yrs now (I true & tension annually).
