Two open questions about Wladimir Klitschko

Wladimir Klitschko is an elite boxer and athlete. At the age of 38, he's not the youngest anymore and he knows it. So I just asked myself two questions about the guy : one concerning his physical performances and the other concerning his fighting style : 1- Wladimir, nearing the 40's, might slow down a little bit. Can he still keep his speed if he doesn't go beyond the 110kg ( 242 lbs) limit? He showed up at the Povetkin fight weighing 109.2 kg ( which I personally think is an excellent weight for him) and didn't seem to have lost speed. However I don't think that he will afford to weigh less than 110kg against the likes of Fury. 2- Will we see Wladimir, just like his brother did, soften/vary his boxing style with age? Wladimir is very skilled and very talented but he seems to be willingly sometimes too rigid when you think about the clinching, his 1-2s etc... I am not sure that he can afford to fight like Vitali but I think Wladimir can fight more awkward. I think that we can definitely see Wlad evolve in 2014.