That's what I get from my standard Phals as well, but the mention of bellina in the parantage makes me think it might be slower.
I don't know for sure as my bellina is new to me, but so far it's been almost exactly two months and the spike is still only just an inch long and it IS still growing... just very slowly. Of course bellina does not have long spikes anyway so maybe it's closer than I think.