Jungling 101

[Ashe]

I, uh, was just adding to your list of super pro junglers.

That aside, I am of the mindset that Udyr should never ever ever lane.
Udyr CANNOT harass in lane
Udyr CANNOT maintain mana in lane
Udyr CANNOT gank freely in lane
Udyr CAN be harassed easily in lane
Udyr is FORCED into pushing his own lane to maintain mana.
(To quote SxR, that is)

Same arguments can apply to Midwick. Both of which were a fairly dominate strategy in the meta for a while to the point of direct nerfs to WW's sustain SPECIFICALLY calling it out as the reason. Regardless of how great of a jungler they are, high ELO games see things like this take over because someone finds the strategy to be rather dominate. If it was as bad of a strategy as some voices claim, then in games of that high of ELO (2000+ streamers and such) they would laugh and counter it and abuse the hell out of exactly those weaknesses. What usually happens is that the Udyr is the other team's counterpick to the first team's solo top, but in general he can be an immovable object that, when someone comes to gank him for pushing his lane, just runs back to his tower while staying full health just to go back and do it again.

At first glance, I'd even say those same arguments (most of them) can be applied to Garen in a solo lane. A power pushing lane (Mordekaiser as well) can do well if they push hard enough to force attrition on the opposing tower while letting it reset their creep wave so they can go back to better positioning and bring the next wave along.