Viability of bootless NW
In TI3 Loda used bootless NW. However, I don't think bootless NW is viable.
Let's see what makes a bootless NW:
1. Moving by spamming Shukuchi enables him to move at least equally fast than heroes with boots.
2. NW's being able to return to battlefield via ulti makes him good even without BoT.
However, there are problem lying with these. 1. Spamming Shukuchi needs mana, and even a lv25 NW with 10 points in attributes bonus does not have enough mana. For sustaining Mana, Loda kept Linken's in his slots, which is a useless item in late game. Boots for Linken's, what a fucking nice tradeoff. 2. By using ulti to return after buyback, unlike Spectre, NW loses his ulti. This ulti is sometimes a second life of NW. Loses a life for a life, what a fucking nice tradeoff.
Therefore, I don't think bootless NW is a viable strategy.