Lizard said:
IAE, yeah, the F/MU is hard to pull off well, but it is a classic archetype for us old 1e-ers. And eladrin seem built for it. I looked at doing it the other way -- Wizard (Fighter), but it seems that fighters get a lot more from dabbling in magic than vice-versa. Melee abilities aren't useful when you've got crap for hit points and no armor proficiency. Scorching Burst/Encounter > Cleave/Encounter.
Ah, but some of us old 1e-ers actually remember the limitations of that system and don't look at it through rose-colored classes.
A 1e Fighter/magic-user:
- couldn't cast spells in armor (until they got elven chain).
- had more hit points than a mage, but fewer than a fighter.
- had a better to-hit chance than a magic-user, but not as good as a fighter.
- had the fighter's weapon skills (about a level behind after 1st).
- had the wizard's magic skills (about a level behind after 1st).
Given all of the above, I think Eladrin Wizard (Fighter Multiclass) is a better match for the old fighter/mage than the fighter/(wizard multiclass).
Assuming the standard array, here's what I'd do...
Eladrin Wizard
STR 13 CON 15 DEX 13 INT 17 WIS 12 CHA 10
Initiative: +1
AC 15
FORT 12
REF 13
WILL 13
Hit Points 25
Bloodied 12
Healing Surges: 8 (6)
Attacks:

Longsword +4 vs. AC

Magic Missile +3 vs. Reflex
Skills: Arcana +10; Athletics +7; Dungeoneering +6; History +8; Nature +8.
Feats: Armor Proficiency Leather (or Durable, for 2 extra healing surges).
Powers: Fey Step, Ghost Sound, Light, Mage Hand, Prestidigitation, Magic Missile, Scorching Burst, Icy Terrain, Acid Arrow, Sleep(*).
Rituals: Animal Messenger, Silence, Tenser's Floating Disk.
Racial Features: Proficient with longsword, Fey Step, low-light vision.
Class Features: Implement Mastery (Wand), Cantrips, Spellbook.
Equipment: Leather Armor, Longsword, Spellbook, Wand.
At 2nd Level, take Shield and Feather Fall as your Utility Powers. Prepare Shield most of the time. This is the time to take Student of the Sword.
Now, he can gain a fighter encounter power at 4th-level. This character will never be a great defender, but he's far less "squishy" than most wizards. Which, in 1e at least, was the primary benefit of the fighter/magic-user. Well, that and the ability to be proficient in a decent weapon (the longsword proficiency takes care of that).
The other good 1st-level feat is Toughness, which would increase the wizard's hit points by 5, but I think the added recovery from having more healing surges (Durable) is a better choice. Or, better yet, not getting hit in the first place (Leather Armor proficiency).
But that's just how I see the old fighter/magic-user.