Hi tis me Moose again! 
Not about ds1 this time, its ds2.
Basically, he has always reversed certain letters and numbers. I have had conversations with each of his teachers about it over the years and consistently been told that its not unusual and he will most likely grow out of it. The magic age of 8 years old has been bandied about as the age that most children have stopped doing it by.
He is now in year 3 and just about to turn 8. He still reverses d and b, p and q, j and l, s and z - although sometimes he gets them right.
The bigger problem is actually in numeracy, where he reverses pretty much all of the numbers that are easily reversable, isywim. So, 2, 3, 5, 6, 7 and 9.
He has a target to check each piece of work carefully for reversals when he finishes it and tends to 'find' between 25 and 50% of the reversals, although sometimes he misses almost all of them.
Yesterday he was doing his literacy homework and reversed the number 7 in the margin. I try not to point out reversals, but will say something like 'you need to check line x carefully' then if he doesn't find it say 'there's a letter/number reversal' then if after properly checking and thinking about it he still doesn't find it, I will help him. Yesterday he simply could not see that the 7 was reversed. Even if once I pointed it out to him he was insistant that it was correct. Finally I pointed to the correct number 7 on the adjacent page and then he looked genuinely shocked.
We have parent's evening coming up shortly and this time we get to see literacy and numeracy teachers instead of just his class teacher. The thing is, I really don't know what I should be asking about this.
Given that he has consistently reversed the same letters since he started writing, would it be safe to say that he is unlikely to stop doing it now?
What are the implications here? He struggled to learn to read, but has come on in leaps and bounds over the past twelve months and is now a keen reader at home. He reads very expressively, but his pace and flow aren't great. I have to admit I hadn't really noticed this all that much until yesterday, when he was reading to his little sister, so unusually, I wasn't sitting with him looking at the words. I realised that he was a lot less flowing in his reading that I had previously thought and think I may not have noticed as much before because I had the words in front of me - if that makes any sense? 
Other than that, his spelling is good - in that he gets 9 or 10 out of 10 most weeks on his test and is fairly good at guessing how a word might be spelled - at least phonetically.
His grasp of maths is also fine, he's a apparently mid level achiever and doesn't seem to have a problem with his actual mathematics, iyswim - just the reversal thing.
Should I even be concerned or is he ok as long as he's still achieving and progressing at a reasonable rate?
I have a friend who is very knowledgeable about dyslexia etc, but get really confused when she starts talking to me about it, as she's way over my head technically about it all.
Any help/explanations in simple layman's terms would be really appreciated.
Thanks in advance. 