Right. With the tourmaster, the delay will be hit with with a wet signal if you've got the reverb on. The order of reverb/delay themselves doesn't matter much, but we normally want them both at the end of the chain. If reverb and delay are the only effects involved, as in your scenario, the only difference is that if the chain is spring-reverb-> Delay, the ratio of reverb to dry signal in each repeat will be the same as the initial attack. If its Delay-> spring-reverb, the portion of reverb will decrease with each subsequent repeat. This is due to the relatively responsive nature of spring reverb, but you and the thousands of screaming fans you play for will hardly notice.
Now if you have any non-time-based effects in your loop you might have a better reason to wish the reverb was post. It would be a good question for Jeff to explain the reason for putting it pre.