I think he and Jonny (should Jonny stay) will show some similar traits in that being up for nomination one week, not the other, nominated again is far more of a roller coaster than say being contiunally nominated when you can at least get you mind into one set. The roller coaster effect must be incredibly confusing and tiring so i think we will see Jonny and Alex showing signs of stress from this.
I think Sandy was the perfect person for Alex to bounce his converastions off - for all there were 20 years between them in age they were so alike, possibly due to the similarities of their work (travel, constantly meeting new people, not being part of the crowd depsite being in professions that advocate uniformity). No-one else in the house brings the best out in Alex which is a shame as he will get boring because he is bored, damn sure I would be in there too!